Securities code: 688069 Securities abbreviation: Delinhai Announcement No.: 2025-006

Wuxi Delinhai Environmental Protection Technology Co., Ltd. announced on winning the bid for the project

The board of directors and all directors of the company guarantee that there are no false records, misleading statements or material omissions in the content of this announcement, and assume legal responsibility for the authenticity, accuracy and completeness of its content in accordance with the law.

Recently, Wuxi Delinhai Environmental Protection Technology Co., Ltd. (hereinafter referred to as "the company") won the bid for the project of "Operation and Management of Xingyun Lake In-situ Algae Control and Water Quality Improvement Project", and the relevant bidding content is announced as follows:

First, the basic situation of the bid-winning project

1. Project Name: Operation and management of Xingyun Lake in-situ algae control and water quality improvement project

2. Tendering unit: Water Conservancy Bureau of Jiangchuan District, Yuxi City

3. Winning bid amount: The budget amount of this project is about 56 million yuan/year, and the service period is two years from the date of signing the contract. The winning bid amount is the comprehensive unit price: (1) the operation and maintenance cost of the four shore-based sites is 0.524 yuan/cubic meter per ton of water per year; (2) The daily operation and management fee of the three independently operated deep wells is 0.034 yuan/cubic meter at a comprehensive unit price of 0.034 yuan/cubic meter per ton of water per year.

According to the company's preliminary calculation, it is estimated that the total amount of the actual amount of winning the bid will be about 87.852 million yuan (two years).

4. Winning bidder: Wuxi Delinhai Environmental Protection Technology Co., Ltd

5. Contract performance period: two years from the date of signing the contract, and the contract is signed once a year (the final contract is subject to the formally signed contract).

Second, the situation of the tendering unit

1. Name of unit: Water Conservancy Bureau of Jiangchuan District, Yuxi City

2. Nature of the unit: administrative organ

3. Unit address: No. 32, Xingjiang Road, Jiangchuan District, Yuxi City

4. Unified social credit code: 11530421015183129N

3. The impact of winning the project on the company

1. The winning bid is 56 million yuan/year, and the service period is two years from the date of signing the contract, and the winning of the project belongs to the company's daily business activities. If the project signs a formal contract and is successfully implemented, it will have a positive impact on the company's main business market influence and operating performance after passing the annual service quality assessment of the tenderer.

2. The company has no affiliation with the tenderer and its agency. The winning of the project will not affect the company's business independence.

4. Risk Warning

As of the disclosure date of this announcement, the company has not received the notice of winning the bid, nor has it signed a formal contract with the tenderer for this project. The final amount, performance terms, service quality and other contents involved in this project are subject to the duly signed contract. The Company will recognize project revenue in accordance with the contract execution and revenue recognition policy. Investors are advised to make prudent decisions and pay attention to preventing investment risks.

The announcement is hereby made.

Board of Directors of Wuxi Delinhai Environmental Protection Technology Co., Ltd

April

11, 2025